WO2019120735A1 - Procédé et dispositif pour la fourniture de la capacité de démarrage d'un véhicule à moteur - Google Patents

Procédé et dispositif pour la fourniture de la capacité de démarrage d'un véhicule à moteur Download PDF

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Publication number
WO2019120735A1
WO2019120735A1 PCT/EP2018/080481 EP2018080481W WO2019120735A1 WO 2019120735 A1 WO2019120735 A1 WO 2019120735A1 EP 2018080481 W EP2018080481 W EP 2018080481W WO 2019120735 A1 WO2019120735 A1 WO 2019120735A1
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WO
WIPO (PCT)
Prior art keywords
power grid
motor vehicle
power
starting
current
Prior art date
Application number
PCT/EP2018/080481
Other languages
German (de)
English (en)
Inventor
Jakob Brandauer
Daniel Mueller
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019120735A1 publication Critical patent/WO2019120735A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements

Definitions

  • motor vehicles In order to increase the performance of the electrical system of motor vehicles, there are efforts to interpret the electrical system of the motor vehicle as completely as possible for higher voltages and operate at higher voltages, for example with 24 volts or 48 volts.
  • motor vehicles There are also motor vehicles that have several electrical systems that are operated at different voltages, for example, with a 12 volt power grid and a 48 volt power grid.
  • Such motor vehicles regularly have DC-DC converters, with which electrical energy between different electrical
  • Electricity networks (as needed) can be transferred back and forth.
  • step b) If in step a) no starting ability of the motor vehicle detected
  • step b) If in step b) a connected jumper cable or a
  • the method is particularly preferred if the following step is performed following step c).
  • Electricity network is greater than or equal to 24 volts and wherein the second working voltage of the second power network is 12 volts.
  • Measures include, for example, devices and methods for
  • the method described here is one such measure.
  • This method is preferably stored in a motor vehicle or in a control unit for a motor vehicle in order to prevent an emergency start situation (in a situation in which the starting capability of the motor vehicle can not be provided by conventional means) to provide a starting capability with the aid of a charger or a starter cable.
  • This controller is then a device in the above sense.
  • This control unit can also be a main control unit of a motor vehicle, on which the described method is stored.
  • the method is particularly suitable for motor vehicles having a
  • Starter drive for starting an internal combustion engine which is operated with a power grid for 48 volts and which has a second power grid, which is operated at 12 volts.
  • Donor vehicle operated with a donor power network to provide 12 volts and a starter cable jump start.
  • power grid is meant here in each case a total of electrical components of the motor vehicle, which are operated on a voltage.
  • working voltage here means an intended working voltage of the respective power grid. As examples, working voltages of 12 volts, 24 volts or 48 volts are given here.
  • the actual voltages in the respective power grid are normally (at least in a state in which the power grid is not loaded or to which no electrical current is tapped from the power grid) above the specified operating voltage provided. A load (a retrieved current) decreases the actual voltage of the power grid.
  • the actual voltage can also fall below the intended working voltage. This is especially true in situations where a starting ability of the motor vehicle does not exist (or at least
  • Step a) describes a test that is preferably performed each time a user attempts to start the motor vehicle.
  • the starting ability of the Motor vehicle is given when the current provided by the first power grid and / or the second power supply is basically suitable large enough to operate the starter sufficiently long enough and strong enough to start the internal combustion engine of the motor vehicle.
  • This current can be estimated in the context of step a), for example, via the on-board network voltages of the first power grid and the second power grid. If necessary, additional cross-influences on the starting ability can be taken into account.
  • the current required to assume the starting capability in step a) may be higher at low temperatures than at high temperatures, because at low temperatures usually a larger force is necessary to start the internal combustion engine of a motor vehicle. In addition to the temperature can also all conceivable others
  • step a) no starting ability was found.
  • the user obtains information that a charger or a starter cable is to be connected to a donor network of a donor vehicle to the motor vehicle in order to achieve an emergency start capability.
  • Process step c) is then carried out as soon as in step b)
  • Starter cable is not about whether a donor cable is connected by itself. Rather, it is about recognizing whether a donor cable is connected, which is also connected (with another end) to a donor network of a donor vehicle in order to electric from this
  • jumper cable is thus understood to be a jumper cable, which is suitable to provide electrical power for the motor vehicle or for the jump start.
  • step a) has the following substeps:
  • Motor vehicle is given, and a2) Determine whether a starting capability of the motor vehicle is given with the first power grid and the second power grid, with the converter from the second power grid, a support current for the first power grid is provided.
  • Such a converter is in particular a bidirectional converter, which can transform energy between the first power network and the second power grid. Both power grids are preferably operated with direct current.
  • the converter is therefore preferably a DC-DC converter, which can convert a direct current from the first power grid in a direct current into the second power grid and vice versa (DCDC converter).
  • a first memory for electrical energy for example, a 48-volt battery
  • Working voltage of the second power supply is provided (for example, a 12-volt power grid).
  • Starter drive on the first power grid can be started without additional hardware via a jumper cable connected to the second power grid and a donor vehicle or via a charger connected there.
  • step b) a connected jumper cable from a connected charger on the basis of a time course of a current is distinguished and recognized, the of the
  • Jumper cable or the charger to the first power grid or to the second power grid flows. To decide which measures can most reliably and quickly ensure the ability to start an emergency, it is important to know whether a charger or a jumper cable is connected to the second power grid.
  • step c) at least the following
  • Sub-steps are executed, if it was detected in step b) that a charger is connected to the second power grid:
  • step c2) It is also advantageous if the following step is performed after step c2):
  • step c3) if appropriate, a second memory of the second power supply system is discharged in order to provide sufficient current for the starting capability of the motor vehicle.
  • the clauses cl) to c3) can also be referred to as "charging function", which are part of the step c) in the event that a charger to the second
  • the goal of this feature is to create a memory in the first power grid of the
  • Motor vehicle with a (conventional) charger which is connected to the second power supply to charge.
  • the method clauses c1) to c3) are implemented so that they can also be executed when the motor vehicle is parked.
  • the first memory and the second memory may also be referred to as a first power source or as a second power source.
  • the first memory and the second memory are baterias or
  • Accumulators that are provided for storing and providing electrical energy in a motor vehicle.
  • other power sources may exist that can provide power. These include, for example, already described jumper cables and chargers already described.
  • Bateriemanagementsystem keep active. This can be done either when a charger is detected on the second mains or when in the
  • step cl The detection of a sufficient for startability current in step cl) is preferably carried out by all currents from all available power sources and storage are considered together. These are in particular the following deliverable streams:
  • a current from a second memory of the second power network which is provided to the first power network via a converter
  • a current from the charger which, in the case that the charger is connected to the second power supply, is also provided to the first power supply via the converter.
  • the power shown here from the charger is usually much lower than a current that can be provided via a jumper cable from a donor network of a donor vehicle. Nevertheless, this current is helpful to keep the time interval in step c2) short.
  • the use of the charger as an energy source for the start of the motor vehicle allows in step c2) to load less electrical energy into the first memory and / or the second memory.
  • step c2) the first memory and / or the second memory are charged in order to restore the starting capability of the motor vehicle. It is charged for at least a first time interval until the startability is restored. Optionally, it can also be charged longer if more time is available than the time interval necessary to provide the startability. This can also be achieved that after step c2), if necessary, a starting capability without additional use of the current is guaranteed from the charger again.
  • Step c3) makes it possible to start the motor vehicle as soon as possible after the start attempt and step c1). As soon as the startability is restored with the aid of all available electric currents, appropriate measures are taken. This can be, for example, a request to a user of the motor vehicle to actuate the ignition of the motor vehicle or a signal to trigger the ignition is actively output.
  • this function should in particular load the first memory in the first power grid, which
  • Loading a first memory is preferred because the first memory belongs to the same power network as the one
  • Starter drive and a current stored here so can be used particularly well for starting the motor vehicle.
  • you should and should have current and voltage limits of the memory being charged will be respected.
  • the first memory In order to enable a motor start as quickly as possible when the first memory is discharged, the first memory should initially be charged with the highest possible current, even if this may even discharge a second memory in the second power network. It should be noted, however, that smart chargers a
  • step a) at least the following sub-step is carried out:
  • the vehicle is to calculate the torque and from this the current required for the engine start from temperature, engine characteristics etc.
  • This current can come from different sources of energy, in particular from a first memory of the first power grid (usually a battery with, for example, 48 volts) and from a second memory of the second
  • Electricity network usually a battery with, for example, 12 volts. Between these two energy sources is the (bidirectional) converter.
  • the memories are preferably designed to be connected via the CAN bus of the
  • the current that can come out of the converter is determined (if a jumper cable is connected to the second power supply) solely by the performance of the converter, since the jump-start in the first power grid provides enough energy to drive the maximum power of the converter (usually about 3 kW) to request.
  • step c) the following sub-step is executed, if it was detected in step a) that a Jumper cable connected to the first power grid or to the second electrical grid:
  • the step c4) represents an alternative to the process steps c1), c2) and c3).
  • the process steps c1), c2 and c3) or the process step c4) are carried out.
  • the method steps cl) to c3) and the method step c4) represent two different alternative paths within the step c).
  • the internal combustion engine of a donor vehicle is in one
  • Electricity donation situation also in operation and can compensate for voltage losses, which result from the donation of electricity, accordingly also.
  • the converter should deliver the maximum possible current and the motor start should be carried out.
  • a maximum current limit which serves to protect the electrical storage.
  • the first memory for example, a 48-volt battery
  • This maximum current limit should not be considered in the short moment of operation of the starter drive, since the current does not flow into the battery but into the starter drive.
  • the maximum current limit is usually temperature-dependent. In particular, a very cold battery may only be charged with a low current in order not to be damaged. If the required starting current is not yet available at the beginning, the first memory should be charged with the help of the converter, whereby all current and voltage limits of the memory must be maintained.
  • step d the output of a signal for lacking start readiness takes place. This should be indicated by a signal in the cockpit of the vehicle. This display can then be deactivated as soon as the starting current can be set. The driver then knows that he can make a start attempt.
  • control device for a motor vehicle having a first power supply with a first working voltage, a second power supply having a second working voltage below the first one
  • control device is arranged for performing a method described.
  • Computer program is stored for performing the method.
  • Fig. 1 a motor vehicle in a jump start situation
  • FIG. 1 shows a motor vehicle 1 with an internal combustion engine 7, which can be started with an electric starter drive 4.
  • the electric starter drive 4 is connected to a first power supply 2, which has a first memory 8, which for the start of the
  • Internal combustion engine 7 with the starter drive 4 provides an electric current.
  • the motor vehicle 1 a second power grid 3 with a second memory 9 for electric power.
  • the first power grid 2 is operated with a first voltage and the second power grid 3 with a second voltage.
  • the first voltage is higher than the second voltage. More preferably, the first voltage is 48 volts or 24 volts and the second voltage is 12 volts.
  • Between the first power grid 2 and the second power grid 3 is an electrical converter 10, with the power from the second power grid 3 can be transferred to the first power grid 2 and vice versa.
  • the motor vehicle 1 preferably also has a control unit 12 with which components of the motor vehicle 1 (in particular components connected to the first power grid 2 and the second power grid 3) can be controlled.
  • the method described here is preferably also implemented.
  • the second power grid 3 has a terminal 13, with which the second power grid 3 can be provided from an external electric current.
  • FIG. 1 shows by way of example two alternatives for electric current sources which are connected to them
  • Terminal 13 can be connected, shown, namely either a charger 6 or a jumper cable 5, with which power from a
  • Dispenser power network 11 can be provided in a donor vehicle 14.
  • Fig. 2 shows a flowchart of the described method. It can be seen that all sub-steps al), and cl) to c4) are shown in this diagram.
  • the sequence of the method steps is shown by the arrows in FIG.
  • the method step al) serves the purpose of determining how big a
  • Support power 15 is that can be provided with the converter from the second power grid for the first power grid.
  • the information regarding the possible assist current 15 becomes the other one

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Procédé pour la fourniture d'une capacité de démarrage d'urgence d'un véhicule à moteur (1) comprenant un premier réseau électrique (2) ayant une première tension de travail, un deuxième réseau électrique (3) ayant une deuxième tension de travail inférieure à la première tension de travail, et comprenant un lanceur de démarreur (4) pour le démarrage d'un moteur à combustion interne (7) qui est alimenté par le premier réseau électrique (2), comprenant les étapes suivantes : a) la détermination si une capacité de démarrage du véhicule à moteur (1) est assurée par le premier réseau électrique (2) et/ou par le deuxième réseau électrique (3), b) si aucune capacité de démarrage n'est constatée dans l'étape a), la détection si un câble de démarrage (5) ou un dispositif de chargement (6) est raccordé au premier réseau électrique (2) ou au deuxième réseau électrique (3), et c) si un câble de démarrage (5) ou un dispositif de chargement (6) raccordé est détecté dans l'étape b), l'initiation de mesures visant à garantir la capacité de démarrage d'urgence du véhicule à moteur.
PCT/EP2018/080481 2017-12-19 2018-11-07 Procédé et dispositif pour la fourniture de la capacité de démarrage d'un véhicule à moteur WO2019120735A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017223278 2017-12-19
DE102017223278.1 2017-12-19

Publications (1)

Publication Number Publication Date
WO2019120735A1 true WO2019120735A1 (fr) 2019-06-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019129170A1 (de) * 2019-10-29 2021-04-29 Volkswagen Aktiengesellschaft Steuerungsanordnung für eine Hochvoltbatterie und Verfahren zum Betreiben einer Steuerungsanordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1168568A1 (fr) * 2000-06-19 2002-01-02 Hitachi, Ltd. Automobile et son alimentation de puissance
US20040041403A1 (en) * 2002-08-27 2004-03-04 Fattic Gerald Thomas Method for internally jump starting an internal combustion engine for a land-based vehicle
DE102004008817A1 (de) * 2003-02-20 2004-10-14 Ford Global Technologies, LLC, Dearborn Verfahren und Vorrichtung zum Laden einer Batterie mit elektrischen Zwei-Spannungs-Systemen
WO2009058592A1 (fr) * 2007-10-31 2009-05-07 Chrysler Llc Système et procédé d'interface utilisateur pour une assistance de saut de véhicules hybrides
US20110012553A1 (en) * 2009-07-14 2011-01-20 Gm Global Technology Operations, Inc. Method of charging a hybrid electric vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1168568A1 (fr) * 2000-06-19 2002-01-02 Hitachi, Ltd. Automobile et son alimentation de puissance
US20040041403A1 (en) * 2002-08-27 2004-03-04 Fattic Gerald Thomas Method for internally jump starting an internal combustion engine for a land-based vehicle
DE102004008817A1 (de) * 2003-02-20 2004-10-14 Ford Global Technologies, LLC, Dearborn Verfahren und Vorrichtung zum Laden einer Batterie mit elektrischen Zwei-Spannungs-Systemen
WO2009058592A1 (fr) * 2007-10-31 2009-05-07 Chrysler Llc Système et procédé d'interface utilisateur pour une assistance de saut de véhicules hybrides
US20110012553A1 (en) * 2009-07-14 2011-01-20 Gm Global Technology Operations, Inc. Method of charging a hybrid electric vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019129170A1 (de) * 2019-10-29 2021-04-29 Volkswagen Aktiengesellschaft Steuerungsanordnung für eine Hochvoltbatterie und Verfahren zum Betreiben einer Steuerungsanordnung
US11451073B2 (en) 2019-10-29 2022-09-20 Volkswagen Aktiengesellschaft Control arrangement for a high-voltage battery and method for operating such a control arrangement

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